Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5d0d2a15d9c087…

MALICIOUS

PDF

77.7 KB Created: 2020-12-28 22:53:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a0e12b6846c9359a8efdc07f007e8c95 SHA-1: 78f98c9b627e6dfaee95132e20a574554cab9f41 SHA-256: 8a5d0d2a15d9c087c9c85a428b941687779f7d25e49364a5ea3606c446dde07c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Sonnys san clemente'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffnew.ru/strik?utm_term=sonnys+san+clemente PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452835/normal_5fd19ad47361f.pdfIn PDF document text
    • https://gukegibulu.weebly.com/uploads/1/3/4/6/134668459/bifujiwed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_5f91ca4bf1aed.pdfIn PDF document text
    • https://xonajababivoxo.weebly.com/uploads/1/3/4/0/134040492/c3bc83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449181/normal_5fe347e1205d8.pdfIn PDF document text
    • https://vekoliro.weebly.com/uploads/1/3/4/4/134482952/lixivulup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374957/normal_5f897c1738610.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490141/normal_5fc8df0fcfb10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c99f2cc7-d9f1-44cb-a881-347020eae9ae/73944385691.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81e03b2d-7943-487f-bd4c-ebec31e65daa/codingbat_answers_warmup_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68f1d74c-3ade-4719-9387-a9777965a9c4/36009851269.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE655 4792 bytes
SHA-256: e877a925fd652fc0c0923d5fa744cdb5668856eb0f66ec5457159f6f3ed664a7
font_01_sfnt_off0000f68b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68B 11408 bytes
SHA-256: 3436c7554be68976b03df8522e404dfbb24a6b0a3865ff84997a839013d82db2
font_02_sfnt_off00011c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C94 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333